Hikelok muaj cov khoom lag luam ntau ntau yam thiab cov khoom siv hluav taws xob, cov khoom siv lub zog, cov txheej txheem ua haujlwm, cov txheej txheem ua ntej, cov cuab yeej ntsuas thiab cov cuab yeej siv tes.
Hikelok subsea li snv, sbv, scv, sf, srv. Ua haujlwm siab yog txog 20,000psig (1379 bar).
